package Demo01;

public class Demo01Integer {
    public static void main(String[] args) {
        Integer in1 = new Integer(1);
        System.out.println(in1);

        Integer in2 = new Integer("1");
        System.out.println(in2);

        Integer in3 = Integer.valueOf(1);
        System.out.println(in3);

        Integer in4 = Integer.valueOf("1");
        System.out.println(in4);
    }
}
